Chloroplast-granum-inspired porous nanorods composed of g-C3N4 ultrathin nanosheets as visible light photocatalysts for highly enhanced hydrogen production
Chloroplast-granum-inspired porous nanorods composed of g-C3N4 ultrathin nanosheets as visible light photocatalysts for highly enhanced hydrogen production
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DOI：
10.1016/j.ijhydene.2019.11.186
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发表时间：
2020-01
影响因子：
7.2
通讯作者：
Hang Wang;Biao Chen;Kai Song;Xinqian Wang;Chenlu Wang;N. Zhao;F. He
中科院分区：
文献类型：
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作者：
Hang Wang;Biao Chen;Kai Song;Xinqian Wang;Chenlu Wang;N. Zhao;F. He
无金属光催化剂因其价格低廉、来源丰富等优点在可见光制氢领域受到了广泛关注。受叶绿体颗粒结构的启发，我们制备了一种新型的由F掺杂的g-C3 N4纳米片组成的多孔纳米棒，用于光催化制氢。所获得的g-C3 N4（FCN-PNR）表现出用于高效吸光的逐层堆叠结构，表现出用于高电荷分离效率的F掺杂，并且表现出用于暴露大量光催化活性位点的多孔结构。这些发现已经通过各种表征进行了研究，例如Brunauer-Emmett-Teller和Photoluminescence。结果表明，优化后的FCN-PNR光催化剂在可见光下的产氢性能达到2600 μmol h−1g− 1，是本体g-C3 N4的近16倍。本研究不仅报道了一种新的叶绿体-颗粒启发的g-C3 N4光催化剂，而且为自然启发的无金属结构的制备和设计用于催化应用提供了新的观点。
Metal-free photocatalysts have attracted great attention in hydrogen production under visible light due to their low cost and abundance. Inspired by the structure of chloroplast-granum, here we prepare a new porous nanorod composed of F-doped g-C3N4ultrathin nanosheet for photocatalytic hydrogen evolution. The obtained g-C3N4(FCN-PNRs) show layer-by-layer stacked structure for highly efficient light hasting, exhibit F-doping for highly charge separation efficiency, and display porous structure for exposing a large amount of photocatalytic activity sites. These findings have been studied by various characterizations, such as Brunauer-Emmett-Teller, and Photoluminescence. As a result, the hydrogen production performance for the optimized FCN-PNRs photocatalyst reaches 2600 μmol h−1g−1under visible light, which is almost 16 times higher than bulk g-C3N4. This study not only reports a new chloroplast-granum-inspired g-C3N4photocatalyst, but also provides new views to the fabrication and design of nature-inspired metal-free structures for catalysis applications.